玉溪市出水口生态公园多级水系净化系统工艺设计  

Process Design of Multi-stage Water Purification System in Yuxi Chushuikou Ecological Park

作　　者：李亮 刘龙志 吴昊 王久振 马竞 杜超 LI Liang;LIU Long-zhi;WU Hao;WANG Jiu-zhen;MA Jing;DU Chao(North China Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300381,China;Wadi Engineering Design Consulting Co.Ltd.,Beijing 100022,China)

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300381 [2]瓦地工程设计咨询<北京>有限公司,北京100022

出　　处：《中国给水排水》2021年第22期47-53,共7页China Water & Wastewater

摘　　要：出水口生态公园是玉溪市海绵城市建设的重点项目,具有典型的高原阶梯型坡地特征。改造前公园作为天然的海绵体,未能发挥绿地水域的调蓄净化功能,且水体水质为劣Ⅴ类。改造过程中利用阶梯地形,遵循水文特性,分层级构建了“多效澄清预处理—复合潜流人工湿地—水生态系统”重力流水质净化系统,形成顺畅通达水体海绵,年径流总量控制率达93%。该净化系统具有良好的脱氮除磷效果,公园水体主要指标稳定优于地表水Ⅳ类标准,NH_(3)-N低于0.1 mg/L,TP低于0.05 mg/L。Chushuikou Ecological Park is a key project of sponge city construction in Yuxi City,which has the characteristics of a typical plateau with stepped slope.Before reconstruction,the park,as a natural spongy body,failed to perform the regulation,storage and purification function of green space,and the water quality could not meet surface water level V standard.In the process of reconstruction,stepped topography was used and hydrological characteristics were followed,and a gravity flow water purification system of“multi-effect clarification pretreatment,integrated subsurface flow constructed wetland and water ecosystem”was constructed in different levels.The water sponge with smooth access was formed,and the total annual runoff control rate reached 93%.The whole purification system had a good nitrogen and phosphorus removal performance.The main indicators of the park water body were stable and better than the surface water levelⅣstandard.NH_(3)-N was less than 0.1 mg/L,and TP was less than 0.05 mg/L.

关 键 词：海绵城市 高原阶梯型坡地 复合垂直流人工湿地 水生态系统 

分 类 号：TU992[建筑科学—市政工程]